/*
* Copyright (C) 2008-2015 by Holger Arndt
*
* This file is part of the Universal Java Matrix Package (UJMP).
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership and licensing.
*
* UJMP is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* UJMP is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with UJMP; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
package org.ujmp.core.io;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.ujmp.core.Matrix;
import org.ujmp.core.objectmatrix.DenseObjectMatrix2D;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
public class ImportMatrixATOM {
public static final Matrix fromStream(InputStream stream, Object... parameters)
throws ParserConfigurationException, SAXException, IOException {
Matrix m = null;
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(stream);
NodeList items = doc.getElementsByTagName("entry");
m = DenseObjectMatrix2D.Factory.zeros(items.getLength(), 5);
m.setColumnLabel(0, "Id");
m.setColumnLabel(1, "Label");
m.setColumnLabel(2, "Link");
m.setColumnLabel(3, "Description");
m.setColumnLabel(4, "Date");
for (int i = 0; i < items.getLength(); i++) {
Node item = items.item(i);
for (int c = 0; c < item.getChildNodes().getLength(); c++) {
Node n = item.getChildNodes().item(c);
if (n.getNodeName().equalsIgnoreCase("id")) {
m.setAsObject(n.getTextContent(), i, 0);
} else if (n.getNodeName().equalsIgnoreCase("title")) {
m.setAsObject(n.getTextContent(), i, 1);
} else if (n.getNodeName().equalsIgnoreCase("link")) {
Node h = n.getAttributes().getNamedItem("href");
if (h != null) {
m.setAsObject(h.getTextContent(), i, 2);
} else {
m.setAsObject(n.getTextContent(), i, 2);
}
} else if (n.getNodeName().equalsIgnoreCase("summary")) {
m.setAsObject(n.getTextContent(), i, 3);
} else if (n.getNodeName().equalsIgnoreCase("updated")) {
m.setAsObject(n.getTextContent(), i, 4);
}
}
}
NodeList channels = doc.getElementsByTagName("feed");
if (channels.getLength() > 0) {
Node channel = channels.item(0);
for (int c = 0; c < channel.getChildNodes().getLength(); c++) {
Node n = channel.getChildNodes().item(c);
if (n.getNodeName().equalsIgnoreCase("title")) {
m.setLabel(n.getTextContent());
}
}
}
return m;
}
public static final Matrix fromFile(File file, Object... parameters)
throws ParserConfigurationException, SAXException, IOException {
FileInputStream lr = new FileInputStream(file);
Matrix m = fromStream(lr, parameters);
lr.close();
return m;
}
}